What are the precautionary measures to be adopted for laying foundation in black cotton soil?

What are the precautionary measures to be adopted for
laying foundation in black cotton soil?
The following precautions are generally adopted while building structures on black cotton soil:
1. To limit the load on the soil to 5.5 tonnes/ sqr. m. if water is liable to to find an access to the
foundations, the limit of loading should be restricted to 4,900 kg/ sqr. m.
2. To take the foundation to such depths where the cracks cease to extend. The minimum depth of
foundation should be at least 1.5 m.
3. To provide reinforced concrete ties or bands all around the main walls of the building. The R.C.C
ties or bands which may be 10 cm to 15 cm deep should be placed at plinth level, lintel level and
eaves level. In case of flat roof, R.C.C slab it self acts as a tie and as such no extra band needed to be
provide near...